Shurflo LVPO-F2 Replacement Cartridge, 3 gallons per minute (11.4 lpm) flow rate, 5.0 micron rating, reduces lime, scale & sediment, NSF (The price stated here is per each Cartridge. The EV part number reflects a pack of 6), Please visit www.everpuresizing.com to learn more about the kind of filtration you may need